Heater construction



Nov. 6, 1928. 1,690,533

C. F. EFRAMSON HEATER CONSTRUCTION Filed Sept. 19, 1927 2 Sheets-Sheet 1 INVENTOR 07634 F EFF/W50 /2 w BY i' F l RNE 2 Sheets-Sheet 2 C. F. EFRAMSON HEATER CONSTRUCTION Filed Sept. 19, 1927 Nov. 6, 1928.

ENVENTOR 6/711 F FF Patented Nov. 6, 1928.

- UNITED'STATES "1,690,533 NT OFFICE (man 13. EIERAMSON, or MINNEAPOLIs, ivrrmmsora.

HEATER oons'rnuorronh Application filed. September 19, 1927. Serial No 220,532. Y

This invention relates to heating systems c tting it into or out of the draft circuit of a' heating unit, whereby the normal line of draft need not be interfered with when a fire is being started, but wherein the radiator maybe cut into the draft line, whenthe lire is well under way, so as to cause the draft to pursue a longer course and thereby exhausting all the heat before it reaches the chimney proper. Further and more speciic oluects will be disclosed in the course of the following specification, reference being had to the accompanying drawings, wherein:

Fig. 1 is a side elevation of a hot air heating furnace unit in which my invention is incorporated and is shown by dotted lines.

Fig. 2 is a rear view of the construction shown in Fig; 1 but with. various parts broken enray for purpose of illustration.

Fig. 3 is a side view of the device as shown in 1, but with the greater portion thereof cut away on a vertical section taken diametrically from front to rear.

Fig. 4 is a plan view in section. as seen substantially on the irregular line H in Fig. 3.

Referring to the drawings more particularly and by reference characters, 7 designates the usual'base of a hot air furnace having a combustion.chamber 8, a fire pot 9, a fire door 10, an ash pit door 11. and an outer shell 12 having one or more cold air inlet pipes 13, and suitable warm air discharge pipe connections 14 in the canopy or top 15 which is spaced above the stove unit or heaterproper.

. These parts are allof common and well known construction, except that I prefer to make the combustion chamber 8 out of sheet metal rather than cast iron so that it will more readily conduct heat. This will of course render it more susceptible to destruction by the heat of the fire, but I find that this disadvantage is more than counterliialanced by the noted advantage. and I have provided the shell 12 with suitable doors 12, so as to render it convenient to replace or repair the shell 8 when necessary. The top of the cham her 8 consists of an inverted cone 16, which extends well down into the chamber and by reason of its shape of course offers a far greater heating area than a flat or slightly rounded top would do. In order that the tip of the cone will'not readilylnirnout, I pro vide it witha shield 17, releasably held in place by a springarm 18, fastened as at 19;

hen one'shield burns outit can readily be replaced through the lire door 10.

i The air circulating through the pipes (not shown) "of the system and through the rooms ofthe house comes in through the opening 13,

and while passing up between the shells or housings 8 and 12 becomes heated in the usual manner before escaping through the outlets let andpassing'to the rooms.

I The chamber 8 is connected with a flue pipe 21, (leading to the chimney) by a housing 22, through which the draft is controlled and defiected by a damper 28, which is pivoted asat 24:, and is operated by suitable means such as a rod25 having a handle at its outer end.

When this rod is pushed in the damper is i a M toprovlde as-strong a draft as possible.

VVhe-nthe rod 25is pulled out, after the fire iswell started the front end of the damper 23 's closed against the front end of an angularly disposed partition 26. This shuts off the direct line of draft which isthen separated by the V-shaped divider 23, 26, and is deflected into a pair of oppositely" disposed, laterally and forwardly directed radiators A and B. These radiators consist, primarily, of upper horizontal tubes or fines 27 which communicats at their rear ends with the housing 22, a pair of forward hollow legs 28, which connect the fines 27 with the forward ends of lower horizontal fines 29, and a rear, vertical flue 30 which connects at its lower end with the fines 29, while its upper end opens into the housing 22 immediately rearward of the deflectors 23 and 26. It will thus be seen that as soon as the direct draft has been cut off, as above noted, the updraft in the chimney will immediately. draw the hot gases and air between the shells 8 and 12 If the draft should become sluggish in mild weather or if so This isthe condition desired when a fire is hem tarted and it is desiredof draftand through said flues, said means comprislng a statlonary deflector and a 1nov the fire should become low it is simple matter to temporarily open the damper 23'to effect a direct draft.

' As shown in the drawings theheight of the radiators A and B is substantially the same as that of the combustion chamber 8 but it is to be understood that-it isnot necessary to so,

limit the vertical dimensions of the radiators, and that the present disclosurevis merely illustrative;

. I It is understood that while I have shown my invention as applied'to hotair heating plants, it may also be usedjto advantage in Havingnow therefore fully shown and ,de-

scribed my invention, hat I claim to bevnew and desire to protect by Letters Patent is a 1. The combination with a heating unit, of means for utilizing the heat of air and gases thrownioff by the fire oft-he unit, comprising radiator forming flues extending laterally about the heatlng unit, and means for defleeting such a1r and gases froma direct line able damper acting deflect-or oo-operating therewith.

2. Thecombinationwith a heating unit, of

means for utilizin the heat of air and gases thrown, off by the Ere of; the unit, comprising radiator forming fines extending laterally aboutthe heating un t, and means for defleeting such an and gases from a direct line of draft and through said fines, said means comprising a stationary deflector and a movable damperacting deflector forming a V- shaped partition therewith.

3. The combination with the combustion chamber and outer housing of a hot air heat ing plant,-of a casinginterposed between the chamber and the draft line through which a direct draft may pass'from the chamber to the flue, a pair of laterally disposed radiators ar ranged between the combustion chamber and said housing and ,circuit-ously connected with said casing and means interposed between the inlet ports of the two radiators and separating the inlet and outlet ports of the re spectiye radiators for selectively deflecting said direct draft. tothe radiators,

4. The combination with the combustion chamber and outer housing of a hot air heating plant, of a casing interposed between the chamber and the draft flue through" which a direct draft may pass from the chamber to the flue, a pairof laterally disposed radiators arranged. between the combustion chamber and said housing and circuitouslyconnected with said casing; and means normally separating the inlet and outlet ports of the radiators for selectively deflecting said direct draft to the radiators, said means consisting of a: stationary deflector for one ofthe radiatom and an adjustable deflector operatively associated with the inlet of the other. radiator. In testimony whereof I affix my si nature.

CARL F.,EFRAMDSON. 

